开始：安装Node.js数据库

本文介绍了开始：安装Node.js数据库的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我是node.js的新手，但很高兴试用它。我使用 Express 作为网络框架，并使用 Jade 作为模板引擎。按照本教程从 Node Camp 。

但我遇到的一个问题是我找不到用于获取数据库设置的简单教程。我尝试建立一个基本的聊天应用程序（商店会话和消息）。

有人知道一个好的教程吗？

这其他 SO post 谈论dbs使用，但因为这与我所在的Django / MySQL世界非常不同，我想确保我明白发生了什么。

谢谢！

解决方案

我假设您有 npm 使用其中一个程式码片段（我使用前一个）安装正确的方式。

Redis

我将使用redis作为数据库。对于一个，它是真的快速，持续。您需要安装它，但这很容易。

make pre> Redis-cli

接下来你应该自己玩redis。我建议您查看 Simon Willison 的精彩教程。他和我也建议你只需使用 redis-cli 来获得数据库的感觉。

Redis客户端

最后，您需要安装一个redis客户端。我建议您使用mranney的 node_redis ，因为我认为这是最快，最积极开发的客户端。 p>

安装

npm install hiredis redis

包含在example.js中的简单示例：

var redis = require（redis）， client = redis.createClient client.on（error，function（err）{ console.log（Error+ err）; }）; client.set（string key，string val，redis.print）; client.hset（hash key，hashtest 1，some value，redis.print）; client.hset（[hash key，hashtest 2，some other value]，redis.print）; client.hkeys（hash key，function（err，replies）{ console.log（replies.length +replies：）; replies.forEach i）{ console.log（+ i +：+ reply）; }）; client.quit（）; }

在数据库中存储会话

快速创建者已创建了一个库，以使用redis处理您的会话。

安装：

npm install connect-redis

示例：

var connect = require（'connect'），RedisStore = require（'connect-redis'）; connect.createServer（ connect.cookieDecoder（）， // 5分钟 connect.session（{store：new RedisStore（{maxAge：300000}） }））;

在资料库中储存邮件

我将使用排序集。使用 ZADD 存储邮件并使用 ZRANK ， ZRANGEBYSCORE 。

Socket.io

最后，如果您试图创建一个简单的聊天，我建议您看看socket.io。

socket.io旨在让每个浏览器和移动设备的实时应用程序 $ b设备，模糊不同的运输机制之间的差异。

socket.io，我发布在 stackoverflow 。添加持久性+身份验证应该很轻松。

I am new to node.js but am excited to try it out. I am using Express as a web framework, and Jade as a template engine. Both were easy to get setup following this tutorial from Node Camp.

However the one problem I am finding is I can't find a simple tutorial for getting a DB set up. I am trying to build a basic chat application (store session and message).

Does anyone know of a good tutorial?

This other SO post talks about dbs to use- but as this is very different from the Django/MySQL world I've been in, I want to make sure I understand what is going on.

Thanks!

解决方案

I assume you have npm installed the correct way using one of these snippets(I used the top one).

Redis

I would use redis as a database. For one it is really fast, persistent. You need to install it, but that is really easy.

make

Redis-cli

Next you should play with redis yourself. I would advice you to look at this excellent tutorial by Simon Willison. He and I also advice you to just play with the redis-cli to get a feeling of the database.

Redis client

Finally you need to install a redis client. I would advise you to use mranney's node_redis because I think it is the fastest and most actively developed client.

Installation

npm install hiredis redis

Simple example, included as example.js:

var redis = require("redis"), client = redis.createClient(); client.on("error", function (err) { console.log("Error " + err); }); client.set("string key", "string val", redis.print); client.hset("hash key", "hashtest 1", "some value", redis.print); client.hset(["hash key", "hashtest 2", "some other value"], redis.print); client.hkeys("hash key", function (err, replies) { console.log(replies.length + " replies:"); replies.forEach(function (reply, i) { console.log(" " + i + ": " + reply); }); client.quit(); });

Storing sessions in database

Also the author of express has created a library to handle your sessions using redis.

Installation:

npm install connect-redis

Example:

var connect = require('connect') , RedisStore = require('connect-redis'); connect.createServer( connect.cookieDecoder(), // 5 minutes connect.session({ store: new RedisStore({ maxAge: 300000 }) }) );

Storing messages in database

I think I would use a sorted set for this. Store the messages using ZADD and retrieve them using ZRANK, ZRANGEBYSCORE.

Socket.io

Finally if you are trying to create a simple chat I would advise you to have a look at socket.io.

socket.io aims to make realtime apps possible in every browser and mobile device, blurring the differences between the different transport mechanisms.

I also created a chat using socket.io which I posted on stackoverflow. Adding persistence + authentication should be a breeze.